disappeared, and the stream was bordered with icicles. As the sun rose
higher rocks were loosened on shattered portions of the cliffs, and came
down in rattling avalanches, echoing wildly from crag to crag.

The main lateral moraines that extend from the jaws of the amphitheater
into the Illilouette Basin are continued in straggling masses along the
walls of the amphitheater, while separate boulders, hundreds of tons in
weight, are left stranded here and there out in the middle of the
channel. Here, also, I observed a series of small terminal moraines
ranged along the south wall of the amphitheater, corresponding in size
and form with the shadows cast by the highest portions. The meaning of
this correspondence between moraines and shadows was afterward made
plain. Tracing the stream back to the last of its chain of lakelets, I
noticed a deposit of fine gray mud on the bottom except where the force
of the entering current had prevented its settling. It looked like the
mud worn from a grindstone, and I at once suspected its glacial origin,
for the stream that was carrying it came gurgling out of the base of a
raw moraine that seemed in process of formation. Not a plant or
weather-stain was visible on its rough, unsettled surface. It is from 60
to over 100 feet high, and plunges forward at an angle of 38°.
Cautiously picking my way, I gained the top of the moraine and was
delighted to see a small but well characterized glacier swooping down
from the gloomy precipices of Black Mountain in a finely graduated curve
to the moraine on which I stood. The compact ice appeared on all the
lower portions of the glacier, though gray with dirt and stones embedded
in it. Farther up the ice disappeared beneath coarse granulated snow.
The surface of the glacier was further characterized by dirt bands and
the outcropping edges of the blue veins, showing the laminated structure
of the ice. The uppermost crevasse, or "bergschrund," where the
_névé_ was attached to the mountain, was from 12 to 14 feet wide,